Apparatus for Projecting Video Image and Method Thereof

Abstract

An apparatus for projecting video image comprises a CPU for producing all kinds of control signals, a signal converting circuit, a Firstin First-out memory unit for converting the digital video signal streams into the video signal streams with time character, a serial/parallel converting unit and a playing unit for playing video image of color visible light. The apparatus also comprises three primary colors emitting diode lines for producing color visible light, convergent lens lines for converging color visible light, lumen emitting diode element, light beam lens, light beam slit, mirror surface triple prism or mirror surface multiprism for receiving and reflecting the mixed color visible light and negative lens for receiving single direction diffuseness of mixed color visible light and projecting on the screen, so that the received analog singal streams can product sequential dynamic color visible picture. The apparatus for projecting video image of the present invention is portable and has low power loss and low cost. The definition of projection and the lumen illumination are improved and the electromagnetic noise is reduced by utilizing the present invention. The present invention also relates to the method for projecting video image.

1 . An apparatus for projecting video image, comprising:
 an interface ( 1 ) for receiving video input signals inclusive of video signals and synchronization signals;   a CPU ( 2 ) for producing various kinds of control signals in accordance with the synchronization signals from the interface ( 1 );   a signal converting unit ( 3 ) for converting the video input signals to digital video data streams in accordance with the controls signals from the CPU ( 2 );   a First-in First-out memory unit ( 4 ) for receiving and temporarily storing digital video signals from the signal converting unit ( 3 ), converting said digital video signals to video data streams with time character in accordance with the control signals from the CPU ( 2 ), and outputting the video data streams with time character under control of the CPU ( 2 );   a serial/parallel converting unit ( 5 ) for receiving the video data streams with time character from the First-in First-out memory unit ( 4 ) in accordance with the control signals o om the CPU ( 2 ) and serial/parallel converting them to parallel video data stream s;   three primary colors or multiple primary colors emitting diode lines ( 1 - 2 ) comprising a plurality of three primary colors or multiple primary colors emitting diode units, for causing the corresponding three primary colors or multiple primary colors emitting diodes units to emit light under the excitation of the parallel video data streams, so as to produce color visible light of various different color combinations;   convergent lens lines ( 1 - 3 ) comprising a convergent lens configured at a luminous end of each of the three primary colors or multiple primary colors emitting diode units, for focusing the color visible light produced by each of the three primary colors or multiple primary colors emitting diode units to form color visible light lines;   lumen emitting diode units ( 1 - 10 ) for controlling illuminating one to plural sets of lumen emitting diodes to produce lumen visible light in accordance with the control signals of the CPU, based on the conditions required by different lumen illuminations;   a light beam lens ( 1 - 4 ) for receiving mixed color visible light formed by the color visible light lines and the lumen visible light, the mixed color visible light penetrating the light beam lens and subjected to parallel processing;   a light beam slit ( 1 - 5 ) having a slit of a predetermined width for performing parallel processing of the mixed color visible light and constraining it to narrow bars;   a mirror surface triple prism or a mirror surface multiprism ( 1 - 8 ), driven by an electric machine ( 1 - 6 ) to synchronously rotate, for receiving the mixed color visible light in narrow bars at a constantly variable incidence angle and reflecting it;   a negative lens ( 1 - 7 ) for receiving the mixed color visible light in narrow bars reflected by the mirror surface triple prism or mirror surface multiprism, the mixed color visible light penetrating the negative lens and being transversely diffused, the negative lens having a curvature that meets the requirements for forming a visible color video image by the mixed color visible light, so that the mixed color visible light is uniformly diffused in a single direction and projected on the screen;   wherein the incidence angle at which the continuous mixed color visible light produced under the effect of the parallel video data streams and lumen control signals irradiates a mirror surface of the mirror surface triple prism or mirror surface multiprism varies at a constant speed in a constant direction, so does a reflection angle of the corresponding mixed color visible light; thus, different positions on a certain plane irradiated by the continuous mixed color visible light reflected produce lines composed of light spots of the continuous mixed color visible light parallel with the turning direction of the mirror surface triple prism or mirror surface multiprism, and the lines composed of continuous light spots constitute each line of the color video image, thereby forming a visible video image; when the mirror surface triple prism or mirror surface multiprism is rotated to an angle contained by respective mirror surfaces, the First-in First-out memory chip is controlled to stop the output of data streams with time character, namely, controlling the corresponding three primary colors or multiple primary colors emitting diode units to stop irradiation, while when the mirror surface triple prism or mirror surface multiprism is rotated to a starting end of the next mirror surface, the First-in First-out memory chip is controlled to start the output of data streams with time character, namely, controlling the corresponding three primary colors or multiple primary colors emitting diode units to start irradiation, and the reflection produced by the continuous mixed color visible light for s a next visible light video image, and iteratively doing so, a continuous dynamic color visible picture provided by the received analog signal data streams is thus formed.   
   
   
       2 . The apparatus for projecting video image according to  claim 1 , wherein the serial/parallel converting unit ( 5 ) can be integrated into a color visible light video image playing unit CLVIP ( 6 ), and the signal leads of the serial/parallel converting unit ( 5 ) corresponding to the three primary colors emitting diode lines are arranged on a dedicated circuit board. 
   
   
       3 . The apparatus for projecting video image according to  claim 1  or  2 , wherein the color visible light video image playing unit CLVIP ( 6 ) comprises inside a casing ( 1 - 9 ) three primary colors emitting diodes lines ( 1 - 2 ) and convex lens lines ( 1 - 3 ) mounted on a support ( 191 ), lumen emitting diodes units ( 1 - 10 ) mounted on a support ( 192 ), a light beam lens ( 1 - 4 ) and a light beam slit ( 1 - 5 ) mounted on a support ( 193 ), an electric machine ( 1 - 6 ) mounted on a support ( 194 ), a mirror surface triple prism or mirror surface multiple prism ( 1 - 8 ) mounted on the support ( 194 ) and a support ( 195 ), the electric machine ( 1 - 6 ) being coaxial with the mirror surface triple prism or mirror surface multiple prism ( 1 - 8 ) at the support ( 194 ), and comprises a negative lens ( 1 - 7 ) mounted on the casing ( 1 - 9 ); wherein the electric machine ( 1 - 6 ) drives the mirror surface triple prism or mirror surface multiple prism ( 1 - 8 ) to synchronously rotate; a housing ( 1 - 9 ) connects the respective supports ( 191 - 195 ) by soldering or using a heat-resistant adhesive substance; inside the casing ( 1 - 9 ), the parts, other than light emitting parts and light receiving parts, are coated with a non-reflective material, and the casing ( 1 - 9 ) and the respective supports ( 191 - 195 ) are all composed of a metal or a substance having a good heat dissipation property; wherein the negative lens ( 1 - 7 ) causes the mixed color visible light to penetrate and diffuses the mixed color visible light in a single direction, and it is a video image playing window of the apparatus for projecting video image in the present invention 
   
   
       4 . The apparatus for projecting video image according to  claim 1  or  2 , wherein the serial/parallel converting unit ( 5 ), according to the specific definition requirement, performs series/parallel conversion of the video data streams with time character to parallel video data streams in the number of pixels required by the specific definition; the mixed color visible light for s rows or columns of video image, and the columns or rows of the video image are acquired by rotating the mirror surface of the mirror surface triple prism or mirror surface multiprism to produce different incidence angles for the mixed color visible light and reflecting the mixed color visible light. 
   
   
       5 . The apparatus for projecting video image according to  claim 1  or  2 , wherein the three primary colors or multiple primary colors emitting diode lines ( 1 - 2 ) are composed of three primary colors or multiple primary colors emitting diode units arranged in one line or two lines, a bright RGB laser luminotron or a bright RGB LED forming a three primary colors emitting diode unit, and they emit light in the same direction and lead out corresponding signal connections; the three primary colors or multiple primary colors emitting diode lines have the three primary colors emitting diode units the number of which is the same as the number of pixels of the definition of the parallel video data streams, and under the excitation of the parallel video data streams, the corresponding three primary colors emitting diodes units are irradiated to emit light thereby to produce color visible light of various color combinations; the three primary colors emitting diode lines and the convergent lens lines can be integrated; in order to improve color degrees, the three primary colors emitting diode units can be substituted by the multiple primary colors emitting diode units; the convergent lens lines can be substituted by a single convergent lens having the same convergence function; the light beam lens and the light beam slit can be integrated. 
   
   
       6 . The apparatus for projecting video image according to  claim 1 ,  2  or  3 , wherein each prism surface ( 181 ) of the mirror surface triple prism or mirror surface multiprism ( 1 - 8 ) has an arc mirror surface so that the pixels of the reflected mixed color visible light on an irradiating plane are uniformly distributed; the arc mirror surface is subjected to the surface mirror finishing to produce a high reflectivity, the arc mirror surface is smoothly jointed with the prism surface ( 181 ) at a first arc ( 182 ) and a second arc ( 186 ), and a third arc ( 183 ) and a fourth arc ( 185 ) are smoothly jointed with the arc mirror surface ( 184 ); the arc mirror surface starts receiving and reflecting the mixed color visible light at its starting point ( 182 ) and stops receiving and reflecting the mixed color visible light at its ending point ( 186 ). 
   
   
       7 . The apparatus for projecting video image according to  claim 1  or  2 , wherein the curvature of the negative lens ( 1 - 7 ) is selected so that a projection image of the mirror length of the negative lens only having the mirror surface triple prism or mirror surface multiple prism is widened in a single direction namely, widening rows or columns of video image, whereby the acquired video image meets the aspect ratio requirement and produces a visible light color video image on a desired plane or screen; a plurality of negative lenses ( 1 - 7 ) and other lenses can form a lens group according to specific requirements, the lens group control signals from the CPU controlling the extent to which the lens group diffuses the mixed color visible light in a single direction, focusing and other processing being performed for its definition 
   
   
       8 . The apparatus for projecting video image according to  claim 1  or  2 , wherein the interface ( 1 ), the CPU ( 2 ), the signal converting unit ( 3 ), the First-in First-out memory unit ( 4 ), the serial/parallel converting unit ( 5 ) and the like are all arranged on a dedicated circuit board, inside the dedicated circuit board are electric bonding leads to be connected with the above parts, and the dedicated circuit board inputs and outputs various signals that are correspondingly connected via a cable and interface. 
   
   
       9 . A method for projecting video image, comprising the steps of:
 a) receiving video input signals inclusive of video signals and synchronization signals;   b) a CPU producing various kinds of controls signals in accordance with the synchronization signals;   c) converting the video input signals to digital video data streams in accordance with the control signals;   d) converting the digital video data streams via a First-in First-out memory unit to video data streams with time character in accordance with the control signals, and outputting the video data streams with time character under control of the CPU,   e) series/parallel converting the video data streams with time character to parallel video data streams in accordance with the control signals;   f delaying electric machine rotating speed and synchronization control signals produced by the CPU by a period of time at the same time of performing steps c-e, thereby guaranteeing synchronization with the conversion from the video input signals to the parallel video data streams P-RGB;   g) three primary colors emitting diode units in three primary colors emitting diode lines emitting light under excitation of the corresponding parallel video data streams, to produce color visible light of different color combinations and converging the color visible light to color visible light lines; meanwhile, lumen emitting diode units controlling under control of the CPU, illuminating one to plural sets of lumen emitting diodes to produce lumen visible light according to different lumen illumination requirements;   h) the color visible light lines and the lumen visible light forming mixed color visible light, the mixed color visible light being subjected to parallel processing and constrained into narrow bars;   i) a mirror surface triple prism or mirror surface multiprism rotating synchronously at a constant speed, and receiving and reflecting continuous mixed color visible light produced under control of the video data streams with time character, the continuous mixed color visible light having a continuously varied incidence angle;   j) a negative lens receiving continuous mixed color visible light in narrow bars reflected by the mirror surface triple prism or mirror surface multiprism, the continuous mixed color visible light penetrating the negative lens and irradiating a plane after being diffused in a single direction to form respective rows of a color video image, thereby forming a color visible image; and   k) controlling, when the mirror surface triple prism or mirror surface multiprism is rotated to an angle contained by respective mirror surfaces, a First-in First-out memory chip to stop the output of data streams with time character, namely, controlling the corresponding three primary colors or multiple primary colors emitting diode units to stop irradiation, whereas controlling, when the mirror surface triple prism or mirror surface multiprism is rotated to a starting end of the next mirror surface, the First-in First-out memory chip to start the output of data streams with time character, namely, controlling the corresponding three primary colors or multiple primary colors emitting diode units to start irradiation, repeating steps e-j, the reflection produced by the continuous mixed color visible light forming a next visible light video image, and iteratively doing so, a continuous dynamic color visible picture provided by the received analog signal data streams being thus formed.